Zandrite Stude Pierced Earrings 6.5mm round cut handset in 14kt White Gold Zandrite, a color change man-made simulant,that changes from purple to blue is the center of this pair of beautiful earrings. A synthetic glass that was originally created by a major glass manufacturing company. It rates 5 on the MOHS' hardness scale, the same as glass. These Zandrites are a purple color, like Amethysts, when in natural light [daylight]and they turn a bright, beautiful blue, like Swiss Blue Topaz, when under standard lighting [indoor]. The color-change is 100%, and it is immediate. These Zandrites measure 6.5mm, are in a round cut, and the pair has a total carat weight of 1.50ctw. They are set in 14kt white gold 4 prong stud earring castings. A unique color change stone that will enhance every jewelry lovers collection. A great gift for a birthday,anniversary,graduation,special occasion or any other holiday event. With either casual,business or formal attire, gemstone earrings transcend all fashion trends,complimenting the wearer with sophistication and elegance.Your earrings will arrive in a gift box and bag,pleasing to receive for yourself or ready to present as a gift.Insurance and delivery confirmation is already included in the domestic flat fee shipping charges.We appreciate your viewing our store,thank you.